Math Problem Statement

How to solve this trignometric equation for all values between 0 <= x <= 2pi. The equation is sin^2(x) - 1 = 0

Solution

To solve the trigonometric equation sin2(x)1=0\sin^2(x) - 1 = 0 for 0x2π0 \leq x \leq 2\pi, follow these steps:

  1. Rewrite the Equation:

    The given equation is: sin2(x)1=0\sin^2(x) - 1 = 0

    Add 11 to both sides to isolate sin2(x)\sin^2(x): sin2(x)=1\sin^2(x) = 1

  2. Solve for sin(x)\sin(x):

    To find the values of xx, take the square root of both sides: sin(x)=±1\sin(x) = \pm 1

  3. Find the Angles Where sin(x)=1\sin(x) = 1 and sin(x)=1\sin(x) = -1:

    • For sin(x)=1\sin(x) = 1, this occurs when x=π2x = \frac{\pi}{2}.
    • For sin(x)=1\sin(x) = -1, this occurs when x=3π2x = \frac{3\pi}{2}.
  4. List the Solutions:

    Therefore, the values of xx that satisfy the equation within the interval 0x2π0 \leq x \leq 2\pi are: x=π2,x=3π2x = \frac{\pi}{2}, \quad x = \frac{3\pi}{2}

So, the solution to the equation sin2(x)1=0\sin^2(x) - 1 = 0 within the interval 0x2π0 \leq x \leq 2\pi is:

x=π2,3π2x = \frac{\pi}{2}, \quad \frac{3\pi}{2}

Would you like more details or have any questions about this solution?

Related Questions:

  1. How would you solve cos2(x)1=0\cos^2(x) - 1 = 0 for 0x2π0 \leq x \leq 2\pi?
  2. What are the general solutions to sin2(x)=1\sin^2(x) = 1 over all real numbers?
  3. How do you find solutions to sin(x)=0\sin(x) = 0 within the interval 0x2π0 \leq x \leq 2\pi?
  4. Can you solve sin(2x)=1\sin(2x) = 1 for 0x2π0 \leq x \leq 2\pi?
  5. What are the solutions to cos(x)=1\cos(x) = 1 for 0x2π0 \leq x \leq 2\pi?

Tip:

To solve trigonometric equations, it's helpful to recall the unit circle values where sine and cosine have specific known values, like 0,±1,±220, \pm 1, \pm \frac{\sqrt{2}}{2}.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Trigonometric equations

Formulas

Trigonometric identities

Theorems

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Suitable Grade Level

High School